有相对的CSS定位器Selenium吗? [英] Is there relative CSS locator for Selenium?
问题描述
假设我在 #myPage 元素下寻找一些 div 元素。
我的目标是使用CSS选择器,并只限于搜索 #myPage 后代。
使用Selenium XPath定位器类似这样:
WebElement page = driver.findElement(new By.ById(myPage));
....
List< WebElement> item = page.findElements(new By.ByXPath(.// div));但是,尝试使用CSS会在文档中产生所有 divs ,而不仅仅是文档中的 #myPage 的后代: WebElement page = driver.findElement(new By.ById(myPage ));
....
List< WebElement> item = page.findElements(new By.ByCssSelector(div));
最大的区别是 .//
前缀,使XPath表达式相对。我在CSS语法中找不到类似的属性,我想知道是否可能。
PS
我知道我可以使用 #myPage> div
表达式,但是我将页面查找操作与其后代的查找相结合,这并不总是可取的。
解决方案此功能尚不存在。在Selectors API第2级中为DOM提出了类似的功能,并在选择器级别4中编码为相对选择器,但我不知道Selenium是否会实现这样的功能。
如果你必须执行相对查找,XPath是你唯一的选择现在。
Suppose I'm looking for some div elements under #myPage element.
My goal is to use CSS selectors and limit the search only to #myPage descendants.
Using Selenium XPath locators I can write something like this:
WebElement page = driver.findElement(new By.ById("myPage"));
....
List<WebElement> item = page.findElements(new By.ByXPath(".//div"));
However, trying to use CSS yields all divs in documents, not only descendants of #myPage:
WebElement page = driver.findElement(new By.ById("myPage"));
....
List<WebElement> item = page.findElements(new By.ByCssSelector("div"));
The big difference is the .//
prefix that makes the XPath expression relative. I couldn't find similar property in CSS syntax, and I wonder if it's even possible.
P.S.
I know I can use #myPage > div
expression, but then I couple the page lookup operation with the lookup of its descendants, which is not always desirable.
解决方案 This functionality doesn't exist yet. There's a similar feature being proposed in Selectors API level 2 for DOM, and codified in Selectors level 4 as relative selectors, but I don't know if Selenium will ever implement such a feature.
If you must perform a relative lookup, XPath is your only option for now.
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